This is incorrect.running an empty tank leaves you more susceptible to water vapour forming in the tank.
It can also shorten the life of the fuel pump, as the pump is submerged in the tank. It is lubricated by the gas, so running the pump with little or no gas in the tank exposes it to long term damage.
I had to replace the fuel pump in an older Chrysler minivan, partly because I ran the tank dry all the time. Now I fill up my vehicles when it's down to a quarter tank.
Running a modern vehicle to empty does not cause any adverse issues related to water vapor.
https://www.cartalk.com/blogs/dear-car-talk/gas-myths-how-close-empty-it-safe-get
Driving until the 'low fuel' light comes on also does not have any detrimental impact.
Yes, if you "run the tank dry all the time" you might have issues, but that is completely different than simply filling up after the light comes on.
There has ALWAYS been more than 1 gallon of fuel left in the tank when fill up with ~20 miles to empty.